Dealing with inconsistent volume levels across your FLAC library is a common frustration, especially when transitioning from older masters to modern "loud" tracks. Because
You have multiple options, ranging from full-featured apps to command-line precision. flac gain fix
: This involves rewriting the audio stream. It is permanent and technically makes the file "lossy" relative to the original source, even if the format remains FLAC [5]. : Use a tool like Dealing with inconsistent volume levels across your FLAC
To solve this without ruining the perfect, bit-by-bit lossless quality of your FLAC files, you need to understand how to properly apply a volume "fix." The Two Ways to "Fix" FLAC Volume flac gain fix